Method and system for storing multiple media tracks in a single, multiply encrypted computer file
First Claim
1. A method for storing multiple tracks of media data in a structured secured file comprising:
- a) storing in the file a file header containing meta-data concerning the file;
b) creating at least two track folders in the file, with one track folder for each track stored in the file, each track folder containing i) a track header containing meta-data concerning the track; and
ii) the media data defining the track stored in an encrypted format.
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Abstract
A method and system is presented for storing multiple tracks of music in a single structured storage file having multiple layers of organization. The top layer contains links to separate “folders” for each track, as well information associated with the collection of tracks as a whole. Inside each track folder is the digital data defining the music track, as well as information concerning that track. Audio/video information associated with the collection can be stored in the root file, while audio/video information associated with the track is stored in the track folder. A file header in the root directory contains a vendor ID and a product ID, which allows licensing software to examine the file and uniquely associate it with a particular license. Preview tracks contained in the track folders can be played if the no license exists. To prevent tampering with the product or vendor ID, the header file is encrypted with DES encryption using an encryption key common to all files. The actual music contained in each track is encrypted with an encryption key unique to that track.
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Citations
24 Claims
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1. A method for storing multiple tracks of media data in a structured secured file comprising:
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a) storing in the file a file header containing meta-data concerning the file;
b) creating at least two track folders in the file, with one track folder for each track stored in the file, each track folder containing i) a track header containing meta-data concerning the track; and
ii) the media data defining the track stored in an encrypted format. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A multi-track media file comprising:
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a) a file header containing information relevant to the entire media file;
b) at least two tracks of media data; and
c) one track header for each track, each track header containing information relevant only to one track. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A multi-track music file comprising:
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a) a file header encrypted using a first encryption key, the encrypted file header containing i) a file identifier, and ii) other data relevant to the complete music file;
b) file audio-visual material related to the complete music file;
c) at least two track folders, with each track folder containing i) a single track of music data encrypted using a second encryption key, ii) a track header containing data relevant to the track of music data, and iii) track audio-visual material related to the track. - View Dependent Claims (22, 23, 24)
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Specification